Title :
Real time wideband direction finding
Author :
Tutaysalgir, Osman ; Orduyilmaz, Adnan ; Oktem, Kerem ; Serin, Mahmut ; Yildirim, Alper
Author_Institution :
Tubitak Bilgem Iltaren, Ankara, Turkey
Abstract :
In this paper, the developed FFT based interferometric direction finding of wideband radar threats for electronic support (ES) and electronic intelligence (ELINT) is presented. Using this method, target radar signal is separated from other radar signals using FFT. Phases of extracted radar signals for two or more channels are calculated. Angle of arrival of extracted radar signal is estimated with the phase differences of each channel pair at selected radar frequency. This method is also applied to frequency agile radars and pulse compression waveform radars. This method is implemented on FPGA platform in real time. For different SNR values, FFT sizes, radar signal instantaneous bandwidths simulation results and real time implementations are presented.
Keywords :
direction-of-arrival estimation; fast Fourier transforms; field programmable gate arrays; pulse compression; radar interferometry; radar signal processing; radio direction-finding; FFT based interferometric direction finding; FPGA platform; angle of arrival estimation; electronic intelligence; electronic support; extracted radar signals; frequency agile radars; pulse compression waveform radars; real time wideband direction finding; target radar signal; wideband radar threats; Field programmable gate arrays; Microwave measurement; Radar; Radio frequency; Real-time systems; Signal to noise ratio; Wideband; Direction Finding; FPGA; Wide band digital signals;
Conference_Titel :
Signal Processing and Communications Applications Conference (SIU), 2015 23th
Conference_Location :
Malatya
DOI :
10.1109/SIU.2015.7130054
